Reactivity in combustion process for expanded graphites: influence of dimensional effect
https://doi.org/10.17586/2220-8054-2016-7-1-234-243
Abstract
Thermal stability in combustion reaction for natural graphite, graphene and several expanded graphite phases were studied; the kinetic parameters of the oxidation reaction were calculated for two samples. Natural graphite (crystalline particles 200 – 300 µm) has the maximum stability (E1 = 201 ± 2 kJ/mol, lg A1 = 7.1 ± 0.1), while multilayer graphene is the most reactive (E2 = 120 ± 1 kJ mol−1, lg A2 = 4.3 ± 0.10). The different sample grain sizes and their different structures result in different thermal stabilities: both in the reaction zones location (i.e. in the topochemical equation forms), and in the kinetic parameters’ values.
Keywords
natural graphite,
graphene,
expanded graphite,
thermal stability,
non-isothermal kinetics,
combustion
Supporting agencies: The work was supported by the Russian Scientific Foundation, Project 14-13-00674.
About the Authors
V. A. Logvinenko
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
Novosibirsk 630090
V. G. Makotchenko
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Novosibirsk 630090
V. E. Fedorov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
Novosibirsk 630090
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Review
For citations:
Logvinenko V.A., Makotchenko V.G., Fedorov V.E. Reactivity in combustion process for expanded graphites: influence of dimensional effect. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(1):234-243. https://doi.org/10.17586/2220-8054-2016-7-1-234-243
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